Getting it to bloom

Why won't my Red Rooster Sedge bloom? (and how to make it flower)

Also called red rooster sedge, leatherleaf sedge (Carex buchananii 'Red Rooster').

More about red rooster sedge

About Red Rooster Sedge

Carex buchananii 'Red Rooster' · also called red rooster sedge, leatherleaf sedge · flowering

Red Rooster is an upright New Zealand leatherleaf sedge with narrow, coppery-red bronze blades curling at the tips. Unlike weeping sedges, it forms a stiff, vertical clump that adds warm colour and architectural form to borders and containers. Evergreen in mild climates, it needs moist, well-drained soil and full sun to part shade, with insignificant brown flower spikes in summer.

Plant type: flowering

The reasons red rooster sedge isn't blooming

Almost every non-blooming red rooster sedge traces back to one of these, roughly in order of how common they are:

Too little sun — most of these need full sun (or very bright light) to flower well; shade gives leaves, not blooms.
Too much nitrogen feed, driving lush foliage at the expense of flowers (very common with general or lawn feeds).
The plant has not been deadheaded, so it stops flowering once it sets seed.
Irregular watering — drought or waterlogging at the budding stage makes buds abort.
It is still too young or was checked by a transplant and is rebuilding before flowering.

Feeding red rooster sedge a high-nitrogen general feed and growing it in too little sun — you get a big leafy plant and almost no flowers.

The fix — how to get red rooster sedge to flower

Maximise sun. Give red rooster sedge the sunniest spot you have — for most bedding and fruiting plants, more direct light directly means more flowers.
Switch the feed. Move off high-nitrogen feeds and use a higher-potassium "bloom" or tomato-type feed as it comes into flower.
Deadhead regularly. Remove spent flowers often to keep it producing more rather than stopping to set seed.
Water consistently. Keep moisture even through budding and flowering — drought-then-flood swings make buds drop.

Light and feeding do most of the heavy lifting here. Dial in the spot with the light guide for red rooster sedge and get the feeding right with the red rooster sedge fertilising schedule — the wrong feed (too much nitrogen) is one of the most common silent reasons a healthy plant makes leaves instead of flowers.

Bloom season and what to expect

Red Rooster Sedge flowers across its growing season (mostly summer) and, kept fed and deadheaded, can bloom for many weeks or right up to frost.

Post-bloom care so it flowers again

Deadhead, keep feeding lightly, and many will rebloom; collect seed from the best plants at the end of the season if you want to grow them again.

For everything else this plant needs day to day, see the full red rooster sedge care brief and its watering schedule — a stressed, badly watered plant rarely has the energy to flower at all.

Red Rooster Sedge blooming — frequently asked questions

Why won't my red rooster sedge flower?

Red Rooster Sedge blooms on the season's growth given enough sun, warmth and the right feed — there is no cold or photoperiod trick, just good growing conditions and a bloom-leaning feed. The most common reason it is not happening: Too little sun — most of these need full sun (or very bright light) to flower well; shade gives leaves, not blooms.

How do I make red rooster sedge bloom?

Give red rooster sedge the sunniest spot you have — for most bedding and fruiting plants, more direct light directly means more flowers. Move off high-nitrogen feeds and use a higher-potassium "bloom" or tomato-type feed as it comes into flower.

When does red rooster sedge normally bloom?